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'Weekly Problem 26 - 2011' printed from http://nrich.maths.org/

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The digits of Alberta's age are interchanged and $1$ is added. The answer is half of Alberta's present age. How old is Alberta?
 

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.

 

 

This problem is taken from the UKMT Mathematical Challenges.

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